10 million is not critical mass. It will begin to outsell the Xbox360 in the US weekly by August. Videogames in general are more popular, so many people are just going to end this generation with multiple consoles.
Yet, as of now we can't say that the Xbox360 is selling better than the original Xbox, since Halo 3 is what put it over the edge. But there still is no evidence that old PS2 buyers are buying 360's. In fact, it seems more likely that Halo fans are buying 360's, but mainstream still thinks the price is too high. That still leaves America up for grabs, and with the PS3 being the more attractive console when prices finally do come down to mainstream level, the 360 will just be the Halo console as it was last generation.
The 360 just doesn't have anything over the PS3, especially if the in game XMB rumors are true for next week. It can't make bigger better games, because the PS3 is more powerful.
The 360 has 2 tricks left. One is dropping price, and one is new AAA titles, yet no new title for the 360 will do much to move consoles against current AAA titles coming to the PS3.
